Thread: Brick fireplace & woodbox

I am curious how you fellas support a brick paver or wall block top on a fireplace, or wood box, etc., that does not have support beneath? The main framing of the fireplace and wood box are of concrete construction block mortared and set. Generally there are areas across the top that have no support from the outer concrete block framing/foundation, thus what do you use to support each block across the top? We have done grilling stations before and I used angle iron across the an opening for an access door to support the block above. Is this generally how things are done? Using any sort of lumber/wood is out of the question. The only other option I can think of is to pour a concrete top and veneer it with brick.

Please provide any professional knowledge, it will be greatly appreciated!

You can put two lintels back to back, brick on the front and form a slab off the back. Crib the form up so you can knock out wedges and drop the form after. Filling the block is a good idea, rebar is cheap peace of mind.

If your cells stack clean you can fill 2 courses at a time. It can be a weak mix, nothing special.

I wish i had pictures of the forms, i had to form a room under a loading dock for a hydraulic pump for a lift. Just use 3/4" ply for the top, maybe two layers depending on size. Then use 2x4s standing up and resting on a smaller 2x4 so you can smack the block away and the form will dropPosted via Mobile Device